P0153 Oxygen sensor slow response (bank 2 sensor 1)
What P0153 means
The upstream oxygen sensor should switch quickly between rich and lean as the engine computer adjusts the mixture. P0153 means the sensor on bank 2 (the side without cylinder 1), before the catalytic converter, is responding too slowly. Fuel control on that bank becomes less precise.
P0153 is a generic SAE J2012 code: it means the same on every make. The exact cause still depends on the car, so read the freeze-frame data before replacing parts.
At a glance
- Severity
- Medium
- Typical repair cost
- 80–350 €
- Workshop time
- 0.3–1.5 h
- Repair difficulty
- Easy
- DIY possible
- Yes
- Check engine light
- Yes
- Affects emissions test
- Yes
Parts and labour at an independent workshop in Europe. Main dealers charge more; the cause decides the bill, not the code.
Symptoms
- Check engine light on
- Slightly higher fuel consumption
- Possible rough idle
- Technical inspection failure for emissions
Common causes
- Aged oxygen sensor
- Sensor contaminated by oil, coolant or silicone
- Exhaust leak near the sensor
- Damaged sensor wiring
- Fuel or misfire problem on bank 2
Can I keep driving with P0153?
You can drive, but have it repaired within one or two weeks.
What to check first
- Check for exhaust leaks around the bank 2 front sensor
- Look for misfire or fuel trim codes on bank 2 and fix those first
- Watch the sensor switching rate in live data with a warm engine
- Replace the sensor if it remains slow
Related codes
- P0152 Oxygen sensor circuit high voltage (bank 2, sensor 1)
- P0151 Oxygen sensor circuit low voltage (bank 2, sensor 1)
- P0155 Oxygen sensor heater circuit (bank 2, sensor 1)
- P0150 Oxygen sensor circuit (bank 2 sensor 1)
- P0156 Oxygen sensor circuit (bank 2, sensor 2)
- P0157 Oxygen sensor circuit low voltage (bank 2, sensor 2)
- P0158 Oxygen sensor circuit high voltage (bank 2, sensor 2)
- P0160 Oxygen sensor circuit no activity detected (bank 2, sensor 2)
Data: TORKO fault-code catalogue, built on OBDex (CC0-1.0) and reviewed against workshop practice. Informational only — it does not replace a diagnosis by a mechanic.
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